Jack actuated tire releasing device



Oct. 12, 1954 J. P. WOOD 2,691,412 JACK ACTUATED TIRE RELEASING DEVICE Filed Dec. 22, 1950 .IIIIIIA 22 INVENTOR (firms P WOOD 197$ ATTORNEY Patented Oct. 12, 1954 JA'CK ACTUATED TIRE-BEEEASTNG'DEVIGE .James P. wood, Port:Lavaca,-\Texz I Applica'tiofibecember 22,"1950,'"SerialNoi 202;171

This i-invention' -relatestote tire releasingzdevice ::and has for one. :ofits: objects: the production of =.'.a:- simple and .efiicient. means r :for. releasing -or breaking a tire loose-from its supporting rim.

:A furtherobject of this. inventionisthaproduc- I =-tion-; 'ofa simple wand eflicient tire. holding and pressure meansywhereby a tirefland its rimlmay :be conveniently r supported .so that; the tire .may beengaged. by a pressure element such. as-a jack for breakingwthe tire 1 away from: its.- supporting rim and-to thereby facilitate the removaLof the tire from. the rim.

Other objects andradvantages of thel resent invention will appearmthroughout T-the following specification and claim.

v1 In wthe drawing:

Figure 1 isua.sideelevationalyiew. of the tire releasing device, a portion of the base being broken away;

' "Figure 2'is'a front elevationalview of-thez-device with 1 the -tirereleasing .'--jack: =-:removed, ithe ltire abutment jack-beingshown :inf transversez'se'ction and the retaining spring andrchain being -broken =Figure'i3i isa side.elevationalwiewiofathestire *releasingijack aportion thereof; being shown in "section;

"Figure' Lis abottomplarryieW of the.tire::releasing shoe;

Figure 5 is a side elevational view of a hand drill attachment which may be used with the tire releasing jack;

Figure 6 is a side elevational view of a tool which may be used with the releasing jack for removing and replacing bearing and races from wheels; and

Figure 7 is a side elevational view of a tool in the nature of a grip vise which may be used with the releasing jack.

By referring to the drawing in detail, it will be seen that ||l designates the base of the jack frame which is provided with an upstanding standard The standard II is provided with a tire releasing jack supporting arm I2 which overhangs the base H) in vertical spaced relation to the base I0, as is shown in Figure l. The arm I2 is provided at its outer end with a pair of spaced vertical plates 3 defining a vertical channel l4.

A vertically arranged tire releasing jack I5 carries a rib portion l6 which fits into the channel- I4 and is held therein in a vertically adjusted position by removable pins These pins selectively fit through the vertically aligned apertures l8 of the spaced plates l3 and through the apertures H! 01 the rib portion I8 to anchor the tire releasing j a'ck in *tioh between'-*the- -plates l3. The tire releasing jack-maybe hydraulically operated or handoperate'dwithout departing from the spirit of the inllClaim. (015115741126) a 'vertically adjusted 'POSivention. In other words any suitable conven- "tion'al means' may be used-to force 'theplunger -rod-orpressure rod downwardly: towardiithe tire' T; 'shown in Figure '1.

A tirereleasing shoe 2| 5 is carried by the lower 10- end ofth'e plunger rod orpressurerod 2|l-and the "iunder face is shaped to conform to the shape. of -the :tire. 1 The underi face of -the shoe 2 I isprovided with a --plurality of transversely extending -ribs '2 2 -to*pro'vide "a roughened tire i gripping: surface. The pressure rod 20 is slidable within the tire releasing thejack l5, 'for- -the purpose of replacement by one of the tools shown in Figures 5" to T-inclusive; A retracting coil spring 23 is adapted tolift therod 2U 'upwardly when pressure .1

*shoe l but or engagement with'lthe side of :the tire T. The jack IE-may be of any suitabletype, ither' hydraulic -or= mechanically operated. 5 The *pressurepf the *shoe 2 upon the tire-"Tmay generally be sufllcientlyreleased by removing the hand -from 'the ='1ever '-2'|'-*lto permit the spring 23 to release the grip of the shoe 2| from'the tire.

" 'If a pawlandrack'type -of -ja'ck is used; the pawl 01* ratch-et-may be released :in 'the"conventional manner. The coil spring 23 is releasably connected at its lower end to the hook 24 of the shoe 2| and is likewise releasably connected at its upper end to the hook 25 which is carried by one of the plates l3.

The tire T and the rim R are of the conventional type. The base I0 is bifurcated or slotted. as at 26, and may support the tire T in the manner shown in Figure 1, or the tire may be supported in any suitable manner where the side of the tire T may be properly engaged by the shoe 2| to release or break the tire away from the rim R. In operation however, it is preferable to proceed as follows:

The wheel is placed horizontally upon the base with the outer end of the tire T resting on the block B which is preferably two inches thick of a conventional type, spaced from the base, as shown in Figure 1, so that the shoe or foot-piece 2| engages the side of the tire close to the rim R, as shown in Figure 1. With a few strokes of the operating lever 21 of the tire releasing jack the rod 20 is extended so that the tire T is disengaged or broken away from the rim R, at one side thereof. The wheel is then turned over or reversed. A chain 28 which is anchored at a suitable location upon the hook 29 is drawn through the wheel and the chain 28 is then anchored near its opposite end to the hook 30, which hook 30 is carried by the base 10 within the slotted portion 26. This will hold the tire and wheel in place upon the base as the operation is continued. The shoe 2| is then brought into engagement with the side of the tire which has not been released from the rim, and contacting the tire adjacent the rim. Pressure is then applied to force the rod 20 downwardly and to thereby force the shoe 2| against the tire T for breaking the remaining side of the tire away from the rim R.

A horizontally mounted jack J of the conventional type is detachably secured to the base of the standard H by fitting engagement with the anchoring plates 3 i. This jack J is provided with a tire engaging shoe 32 which exerts pressure against the tire T toward the center of the rim R. A hand tire tool is then used to remove the tire T from the rim R. The tire may be replaced by putting the tire horizontally on the block and the base. The tire is pressed toward the center ofthe rim by jack J and the tire is forced into engagement with the rim R. by means of a hand tire tool of the conventional type.

In Figures 5, 6 and 7 there are shown difierent types of tools, such as a hand drill, a bearing releasing and replacing tool, and a grip vise, which are provided with suitable rods for fitting into the jack [5 in place of the rod 20 shown. Any type of tool may be actuated by the jack l5 without departing from the spirit of the invention. ,In this way the device is adapted for use in many ways and for work which is difiicult to handle otherwise.

It is very diificult to release tires from rims, and particularly to release a tractor tire from the rim, since the tire cannot be easily broken from the rim with the conventional sledge hammer and pry bar. The apparatus above defined, however, enables an operator to quickly and easily break a tire loose from the rim without the danger of injuring the tire. Furthermore by providing a structure to which various types of tools may be releasably carried by the jack [5, the use of the device for various purposes has been greatly extended.

It should be noted that certain changes in detail construction may be made without departing (33 from the spirit of the invention, so long as these changes fall within the scope of the appended claim.

Having described the invention, what is claimed as new is:

A tire releasing device comprising a frame including a longitudinally extending base, an upstanding standard carried at one end of said base, a verticallyadjustable pressure jack suspended above said base from said standard, the base being adapted to support a tire and wheel rim in a horizontal position, a pressure shoe carried by said jack for engaging the side of a tire adjacent the heading of a tire and adjacent the wheel rim, said base having a slotted portion, flexible means detachably secured at one of its ends to said base and adapted to pass transversely under and around a wheel rim and detachably secured at its other end to said standard above said slotted portion for holding the rim in a set position and constituting a rim anchoring means, an individually adjustable horizontal abutment carried by said base, said horizontal abutment having a tire tread engaging means extending at right-angles to said pressure shoe and in opposed relation to said rim anchoring means for firmly holding the tread of the tire in a set position and to prevent the tread of the tire from expanding outwardly away from the rim as said pressure shoe is forced against the side of the tire by the pressure jack to thereby facilitate the breaking of the beading of a tire from the rim in a manner whereby the pressure of the pressure shoe will be exerted upon the side of the tire adjacent the beading thereof.

References Cited in the file of this patent UNITED STATES PATENTS Larson July 8, 1952 

